Database stores group names with special characters inconsistently

[johanehnberg]

Describe the bug

The config values for enabled and groups_request_sign are different and causes issues

To reproduce

1. Create a group "SÖ".
2. Enable the libresign app for that group.
3. Allow signature requests for that group.
4. Inspect database with select configkey,configvalue from oc_appconfig where appid = 'libresign'; and observe

enabled | ["admin","S\u00d6"]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
groups_request_sign | ["admin","SÖ"]

This is potentially also causing a render issue in the "Allow request to sign" multitag input field, which won't show all of the groups.

Expected behavior

Database follows one character policy

Screenshots

No response

Environment information

• Ubuntu 24.04 server with Ubuntu repository LAMP stack
• Nextcloud Hub 26 Winter (33.0.3) tarball install
• Libresign 13.2.4

Additional context

No response